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3 July 2016

Lake Erie Watershed Soil Phosphorus Study Shows Glyphosate Link

As reported recently by Laura Barrera in the┬ámagazine No-Till Farmer, a study led by Ohio Northern University chemistry professor Christopher Spiese links the popular herbicide glyphosate to dissolved reactive phosphorus (DRP) desorption in soils. Mobilization and runoff of phosphorus to streams and lakes is associated with toxic algae blooms in Lake Erie and the Gulf of Mexico Dead Zone. For decades, soil scientists have understood phosphorus to form low-solubility compounds …

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22 April 2016

It’s Mud Season on Lake Erie

This (above) is a MODIS satellite image of Lake Erie taken April 15, 2016. It clearly shows sediment entering the lake from major rivers and tributaries. The brownish hues on the land surface indicate “leaf off,” dead or dormant plant cover, and bare-ground agricultural fields. Later in the summer, the tawny sediment plumes of spring will give way to verdant swirls of nuisance algae blooms, like this: Between mud season …

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